Hotel-corridor lock.



N. B. HURD. HOTEL CORRIDOR LOUK. APPLIUATION FILED JUNE 27, 1910.

974,666. Patented Nov. 1, 1910.

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IIIII N. B. HURD.

HOTEL CORRIDOR LOCK. APPLICATION FILED mm: 27, 1919.

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Patented Nov. 1,1910.

N. B. HURD. HOTEL CORRIDOR LOOK. APPLICATION FILED JUNE 27, 1910.

Patentd Nov. 1, 1910.-

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No'itivIAN B. HURD, on NEW BRITAIN, coNNEcrIcUT, ASSIGNOR T0 RUSSELL & ERWIN MANUFACTURING COMPANY, or NEW BRITAIN, CONNECTICUT, A CORPORATION or CONNECTICUT.

HOTEL-CORRIDOR LOCK.

Specification of Letters Patent.

Patented Nov. 1, 1910.

To all whom it may concern:

Be it known that I, NORMAN B. HURD, a citizen of the United States, residing at New Britain, county of Hartford, State of Connecticut, have invented certain new and useful Improvements in Hotel-Corridor Locks, of which the following is a full, clear, and exact description.

My invention relates to improvements in locks and latches and is directed particularly to a lock especially adapted for use in connection with hotel corridor doors.

In the accompanying drawings,Figure 1 is a side elevation of a lock constructed to embody my invention, the cap being removed to show the internal arrangement of parts; Fig. 2 is a similar view, certain parts being in a different position from that indicated in Fig. 1; Fig. 8 is a rear elevation of the parts shown in Fig. 1, the case being in section on the line acw of Fig. 1; Figs. 4 to 11 inclusive are views of details, and Figs. 12 to 15 inclusive are side elevations of different keys adapted for use with the lock.

1 represents the case; 2 the cap; 3 a spring latch bolt normally pressed forward by a suitable spring 4 mounted in the usual way upon the tail of the latch or otherwise as desired.

5 is the usual knob controlled roll-back. The roll-back when turned is designed to retract the latch bolt 3, and in this particular instance, there is located between the rollback 5 and the tail end of the latch 3, a spring-actuated yoke slide 6, whereby the latch may be retracted by rocking the rollback 5 in either direction. 1.

7 is a stop shoulder formed on a movable skeleton frame 8. The skeleton frame 8 carries a pivot 9. On the pivot 9 is mounted a main tumbler 10, spring-controlled in the usual manner.

11 is a slot or gateway for a fixed fence 12, said slot 11 in this instance being parallel with the line of movement of the slide 8. Back of the skeleton frame 8 is a secondary tumbler 1 1.

15 is a pivot stud which connects the secondary tumbler 14: to the skeleton frame 8 to the extent that while the skeleton frame may move to the left from the position indicated in Fig. 1 to that indicated in Fig. 2 independently of the secondary tumbler, nevertheless, if said frame and secondary tumbler both stand in the left-hand position,

they may be moved bodily to the right-hand position or that indicated in Fig. 1. This is because the stud 15 stands in the gate or slot 11, one end of said gate bein extended as shown in dotted lines in Fig. 7 on the back of the frame 8. The stud 15 in all of its positions, and irrespective of the position of the frame 8, operates as a pivot,

16 is a key-controlled roll-back arm. This roll-back has a slot 16 and is pivotally mounted on the inner side of the case 1, the slot being in line with the keyhole passage in the cylinder lock 17 whereby when a key of sufficient length has been passed through the lock 17 and projected into the slot 16*, the turning of the key will simultaneously turn the roll-back 16, which in this particular instance, Iwill refer to as the secondary roll-back.

The main roll-back is indicated at 18, being at the inner end of the plug of the cylinder lock 17.

19 is a spring-actuated lever which 0011- stitutes one effective means for frictionally holding the roll-back 16 in its neutral position, viz., that shown in Fig. 1.

20 is a roll-back arranged to be rotated by the well known so-called thumb turn arranged on the inner side of the door and having roll-back arms 25 25 adapted to engage arm 14" of tumbler 14 and arms 20 adapted to engage slide 8.

I have thus far referred in a general Way to the main elements constituting the look. I will now refer to the operation and incidentally point out subordinate features of construction.

Assuming the parts stand in the position indicated in Fig. 1, anyone inside or outside of a door to which the lock is applied may, under such conditions, freely retract the latch bolt 3 by turning the rollback 5 through the medium of the ordinary door knobs inside and outside of the door. The views indicated by Figs. 1 and 2 represent that side of the lock which would face the outer side of an inwardly opening door. If at that time it becomes desirable to lock the door from the outside, the holder of the keys 22, 23 or 24 may insert the same in the cylinder lock 17, and by turning it in the proper direction, will cause the roll-back 18 to free the main tumbler 10, whereby the skeleton frame 8 may be shifted to the latch dead-locking position shown in Fig. 2.

the secondary tumblenla remaining in its original position. A reverse rotation will restore the main tumbler to the position shown in Fig. 1. In this particular instance the key 22 may represent the guest key; 23 the grand-master key or housekeepers key; 24 the master key for the rooms on a single floor and 25 the emergency or proprietors key. All of said keys are properly bitted to operate the cylinder lock 17. Should anyone within the room desire to unlock or look the door at any time, this may be readily done through the medium of the roll-back 20, actuated by the inside thumb-turn, for no matter how the parts stand it is always possible to shift the frame 8 and the latch stop 7 by this means.

IVhenever the door is locked from the inside by means of the thumb turn, under such conditions, it is possible to gain admission from the outside only by a key of sufficient length to engage with the arm 16 as will now be explained. Starting with the parts as shown in Fig. 1, if the thumb turn rollback 20 is rotated clockwise, it will, through one of its arms 20 first depress and free the secondary tumbler 14 and through it the main tumbler 10 said tumbler having a pin 10 normally lying beneath notch 14' of tumbler 14. As the roll-back 2O continues to rotate one of its arms 20" engages the slide 8 and shifts it together with its tumbler 10 to the left. The secondary tumbler is under these conditions carried along with the frame by reason of the extension 10 on tumbler 10 engaging with the shouldered portion at 1% of the tumbler 14. At the end of this movement (the rollback 20 reaching its horizontal position) both tumblers will rise and will be engaged by the front side of their respective fences 12-21. Any attempt to gain admission from the outside under such conditions will be ineffectual excepting by the key 25. Any of the other keys if inserted in the cylinder lock will simply operate the roll-back arm 18, and while this will depress the main tumbler 10 to free it, it is obvious that the secondary tumbler 14 will still stand in its advanced position and will abut against the forward side of the fence 21. In this position the stud l5 stands in the forward end of the slot or gateway l1 and hence holds the frame in its forward or latch-dogging position. It follows therefore that under such conditions admission cannot be gained excepting by a key which will not only operate to slide back the frame 8 but will first release both tumblers. Such a key is represented at 25 in the emergency key, already explained. By using such a key both roll-back arms 18 and 16 are turned, freeing both tumblers, the former engaging the slide 8 to move the same rearwardly, thereby freeing the latch 3.

Under some conditions it might be desirable to have the pass-key or even the grand-master key of such length as to operate the secondary tumbler, that, of course, being optional. In this sense, those improved features of lock construction herein claimed need not be subordinated to the use of a set of keys only one of which will operate under all conditions the dead-locking device or stop 7 when the door has been locked from the inside.

WVhat I claim is:

1. In alock, a latch-bolt, knob mechanism for operating said latch mechanism from both sides of the look, a dead-locking device, a main tumbler carried thereby, a secondary tumbler cooperating therewith but relatively movable independently thereof, means for operating both of said tumblers simultaneously.

2. In a lock, a latch-bolt, knob mechanism for operating said latch mechanism from both sides of the look, a dead-locking de vice, a main tumbler carried thereby, a secondary tumbler cooperating therewith but relatively movable independently thereof, means for operating both of said tumblers simultaneously and for shifting said tunr blers simultaneously.

3. In a look, a latch-bolt, knob mechanism for operating said latch mechanism from both sides of the lock, a dead-locking device, a main tumbler carried thereby, a secondary tumbler cooperating therewith but relatively movable independently thereof, means for operating both of said tumblers simultaneously and for shifting said tumbler simultaneously, a connection between said tumblers whereby the movement of the secondary tumbler in one direction will impart a corresponding movement to the first mentioned tumbler.

1. In a lock, a latchbolt, knob mechanism for retracting said latch-bolt from both sides of the look, a dead-locking device, a main and secondary tumbler mechanism co-acting therewith, thumb-turn mechanism for the inner side o f the lock for moving said deadlocking device from its operative to its inoperative position and vice versa under all conditions, two keys adapted to said lock, one of said keys operating said dead-locking mechanism and one of said tumblers, the other key operating said dead-locking mechanism and both of said tumblers.

5. In a look, a latch-bolt, knob mechanism for retracting said latch-bolt from both sides of the look, a dead-locking device, a main and secondary tumbler mechanism co-acting therewith, thumb-turn mechanism for the inner side of the lock for moving said deadlocking device from its operative to its inoperative position and vice versa under all conditions, two keys adapted to said lock, one of said keys operating said dead-locking mechanism and one of said tumblers, the

other key operating said dead-locking mechanism and both of said tumblers, said keys being of different over-all length.

6. In a lock, a latch-bolt arranged to be retracted from either side of the door by the usual knob mechanism, dead-locking mechanism co-acting therewith including a slide and two tumblers co-acting therewith, one tumbler being carried by said slide in both directions, the other tumbler being movable by said slide in only one direction, a rollback operable from the inner side of the door for moving all of said parts bodily into the dead-locking position, two keys arranged to cooperate with said lock, one of said keys being arranged to release one of said tumblers, the other being arranged to release both of said tumblers.

7. In a look, a latch-bolt arranged to be operated by the usual knob mechanism from both sides of the door, a dead-locking mechanism co-acting therewith including a slide, a roll-back for operating said slide, said roll back being movable from the indoor side of the lock, two keys insertible from the opposite side of the lock, said keys being of difi'erent over-all length, two separate tumbler mechanisms, one of said keys being arranged to operate one of said tumbler mech' anisms, the other key being arranged to operate both of said tumbler mechanisms.

8. In a lock, a latch-bolt arranged to be operated by the usual knob mechanism from both sides of the door, a dead-locking mechanism co-acting therewith including a slide, a roll-back for operating said slide, said rollback being movable from the indoor side of the lock, two keys insertible from the opposite side of the lock, said keys being of different over-all length, two separate tumbler mechanisms, one of said keys being arranged to operate one of said tumbler mechanisms, the other key being arranged to operate both of said tumbler mechanisms, including two separate and independent key controlled roll-back arms arranged at different distances from the outer side of the door, one of said keys being arranged to engage and operate only one of said roll-back arms, the other key being of suflicient length to en gage and operate both of said roll -back arms.

9. In a look, a latch-bolt operable from both sides of the door by knob mechanism, a dead-locking device for said latch-bolt comprising a reciprocating slide, a thumbturn controlled roll-back operable from one side of the door for moving said slide, two separate tumblers for controlling said slide, said thumb-turn roll-back operating both tumblers under all conditions, a cylinder lock for the outer side of the door, a rotatable plug therein, key-controlled pins for locking said plug, two difi'erent keys arranged to operate said pins for freeing said plug, a key-controlled rollback on said plug, another key-controlled rollback independent of said plug, one of said keys operating the former key-controlled roll-back, the other key operating both of said key-controlled roll-backs simultaneously.

10. In a lock, a latch-bolt arranged to be operated from both sides of the door by knob mechanism, a dead-locking device arranged to hold said latch-bolt extended, two separate tumblers therefor, means at the inner side of the door for freeing both of said tumblers and shifting said dead-locking mechanism under all conditions, a cylinder lock for the outdoor side of said lock with two keys adapted to said cylinder lock, with means for connecting one key to only one of said tumblers and dead-locking mechanism, and with means for connecting the other key with both of said tumblers and said dead locking mechanism simultaneously.

11. In a look, a spring latch arranged to be operated by knob mechanism from opposite sides of the door, a dead-locking device for said latch-bolt to hold the same extended when desired, a knob -controlled roll-back for operating said uead-locking device under all conditions from the inner side of the door, two keys arranged to operate said dead-locking device from the outer side of the door, means to prevent one of said keys from moving said dead-locking mechanism from its operative to its inoperative position after it has been advanced to the operative position by the operating means at the inner side of the door.

NORMAN B. HURD.

Witnesses M. S. WIARD, MINNIE T. NOWLAND. 

